CN102488308A - Advanced coordinated control system for moisture in cut tobacco dryer - Google Patents

Advanced coordinated control system for moisture in cut tobacco dryer Download PDF

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Publication number
CN102488308A
CN102488308A CN2011104147961A CN201110414796A CN102488308A CN 102488308 A CN102488308 A CN 102488308A CN 2011104147961 A CN2011104147961 A CN 2011104147961A CN 201110414796 A CN201110414796 A CN 201110414796A CN 102488308 A CN102488308 A CN 102488308A
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control system
control
moisture
model
head
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任正云
吕骏
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Donghua University
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Donghua University
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Abstract

The invention provides an advanced coordinated control system for moisture in a cut tobacco dryer. The system is characterized by comprising a head control system, a middle control system and a tail step control system, wherein the head control system adopts a multi-input single-output model; in the middle control system, the moisture is introduced into the control system and subjected to feedback correction, and during model predictive control, an error between the process actual output and the model output is adopted for feedback to overcome a defect; and the tail step control system establishes a model for the tail process. The advanced coordinated control system has the advantages that: 1, the control process is fully automatic; 2, the capacity of overcoming interference is high, and the control accuracy is high; 3, the system has an adaptive control function; 4, the dried cut tobacco amount at the head and tail is reduced to the greatest degree; 5, the oscillation in the regulating process is avoided; 6, the fragmentation of the cut tobacco in the production process is reduced; 7, jump and non-smoothness caused by piecewise fitting are avoided; and 8, a condition that the relative humidity in a cut tobacco drying cylinder is influenced due to ultrahigh or ultralow moisture exhaust is avoided.

Description

The advanced coordinated control system of cut-tobacco drier moisture
Technical field
The present invention relates to a kind of advanced coordinated control system of brand-new cut-tobacco drier moisture that is applied to baking silk workshop section of cigar mill, be used to control pipe tobacco, belong to the Advanced process control field in the moisture after the overbaking silk stage.
Background technology
Baking silk tube outlet moisture in cut tobacco is an important quality control index in the throwing process; Baking silk tube moisture content of outlet control both at home and abroad is (like German Huani at present; Elder brother's ship and Qinhuangdao cigarette machine factory), all adopt simple mathematical model to combine the traditional PID controller algorithm to control.Owing in baking silk process, influence the disturbing factor many (as: charging moisture in cut tobacco, charging flow of tobacco, steam pressure, cut-tobacco drier hot blast temperature, wind speed etc.) of pipe tobacco outlet branch water, there is large time delay and stronger non-linear in controlled device.In the production process of reality, there is following problem:
Barrel temperature and water content have stronger non-linear relation, on the different temperature level, and every rising or to reduce the change of soil water content amount that identical temperature causes inequality, the utilization linear control method like pid control algorithm, is difficult to the control effect that reaches satisfied.
The size of baking silk moisture content is relevant with a lot of disturbing factors, as: charging moisture, the pipe tobacco trade mark, environment temperature, ambient humidity, baking silk tube rotating speed, hot blast temperature, hot blast humidity, hot air flow, heating steam temperature, heating steam degree of saturation or the like.These factors have some to measure and to control, like baking silk tube rotating speed, hot blast temperature, hot air flow, heating steam temperature; Some factors are can measure but uncontrollable, like charging moisture, the pipe tobacco trade mark; And some factors are to be that immeasurability is uncontrollable, like environment temperature, ambient humidity, hot blast humidity, heating steam degree of saturation.
Process exists uncertain and large time delay characteristic, shows that mainly it is incomplete same to control effect under the identical controlled condition and environment; Control variables is after adjustment a period of time, and the variation of controlled variable just can embody, and demonstrates pure hysteresis characteristic.
Head in the baking silk process does not have the measured value of moisture content, can't carry out FEEDBACK CONTROL, will control according to experience fully.At afterbody, because the pipe tobacco amount reduces suddenly, have big thermal capacitance and dry by the fire the silk tube, the temperature of barrel is difficult to speed decline in accordance with regulations, makes that the dried pipe tobacco of afterbody is many.Itself has particularity moisture process, is not common single order or second order process, is one type of novel combined integral process, the dynamic characteristic more complicated.The process that adjustment barrel temperature controlled water divides is slow; And the process of adjustment humidity discharging control moisture is than very fast; There is coupling phenomenon in dynamic relationship more complicated between the two, and conventional pid control algorithm is difficult to the effective balance of between; A little less than usually causing vibration or regulating action too, need manual intervention.Baking silk process has above characteristic just, and the control method that utilization is conventional is difficult to reach gratifying control quality.
Summary of the invention
The purpose of this invention is to provide a kind of control system, make moisture in cut tobacco control steadily, eliminate manual intervention, improve the process control precision through this system.Make new system have higher adaptivity and self-learning function.As time goes on the variation of working condition, system has certain self study adaptive ability, does not need manual intervention, and has stronger anti-interference.
In order to achieve the above object, technical scheme of the present invention has provided the advanced coordinated control system of a kind of cut-tobacco drier moisture, it is characterized in that: comprise head control system, middle part control system and afterbody stage control system, wherein,
Head control system adopts the single output model of many inputs, just can come the heating rate of comprehensive adjustment barrel according to expectation moisture content of outlet response curve, the temperature of hot blast; The flow of hot blast; According to this model, than very fast, the speed that heats up then tends towards stability at the starting stage programming rate;
Middle part control system adopts moisture is incorporated into the control system; Carry out feedback compensation; Model Predictive Control adopts the error between actual output of process and the model output to feed back and remedies this defective; In global optimization, can overcome the uncertainty in the system effectively like this, improve the control accuracy and the robustness of system;
Middle part control system takes humidity discharging to be controlled to be the master, and the barrel temperature is controlled to be auxilliary, and with both coordinating and unifyings; Control moisture content of outlet in short-term with humidity discharging,, can improve the precision of moisture Control so greatly because humidity discharging control moisture has response speed fast; And when the valve position of humidity discharging is too small or excessive; Will be with suitable speed adjustment barrel temperature, like this because the change of barrel temperature, with making the exhausting moisture valve bit recovery arrive desired setting value;
The afterbody stage control system is set up the model of afterbody process, and then carries out Model Predictive Control; Reduce the barrel temperature fast, accelerate the flow velocity of afterbody pipe tobacco, shorten the time of staying of pipe tobacco in baking silk tube, just reduce the pipe tobacco dewatering time, prevent the pipe tobacco overdrying, reduce the quantity of dried pipe tobacco greatly.
Preferably; Said head is controlled the head moisture in cut tobacco control accuracy of system than higher, has designed the self-learning function of advanced control algorithm, and it is according to the input and output metrical information of real process; Adopt certain object function reconstruction baking silk tube intensification Mathematical Modeling; After through 1-2 batch self study, make baking silk head moisture Control reach high control precision, and the characterisitic parameter of relevant model is preserved.
The invention has the beneficial effects as follows:
1. control procedure is automatic fully, really accomplishes operating in a key;
2. it is strong to overcome interference performance, and control accuracy is high;
3. have adaptive control function, through on-line study and precise math model, guarantee that head moisture arrives setting value fast, does not leap high at head;
4. through precise math model, optimize the control model of head and afterbody, reduce the dried pipe tobacco amount of head and afterbody to greatest extent;
5. coordinate barrel temperature and humidity discharging to the association between the moisture adjustment, eliminate the coupling between them, avoid the vibration in the adjustment process;
6. in the moisture field in stable baking silk tube, stabilizing sleeve wall temperature as much as possible, minimizing pipe tobacco making in process of production is broken;
7. employing high-order moment to pressure and temperature conversion carrying out match, improves the precision of conversion, jump and the unflatness of avoiding piecewise fitting to cause;
8. not only control the moisture of outlet; And the valve position of humidity discharging is controlled on certain setting value, the valve position of humidity discharging fluctuates on desired ideal value, promptly so-called IRV control; Avoid excessive or too small and the relative humidity in the influence baking silk tube of humidity discharging, and then the suction that influence pipe tobacco is distinguished the flavor of.
Description of drawings
Fig. 1 is the advanced coordinated control system sketch map of a kind of cut-tobacco drier moisture provided by the invention.
The specific embodiment
For making the present invention more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
As shown in Figure 1, the advanced coordinated control system of a kind of cut-tobacco drier moisture provided by the invention, it is the head of setting up object that this system implements the advanced model PREDICTIVE CONTROL main to baking silk process, middle part and afterbody model.These models comprise: feed rate is to the model of moisture content of outlet, and charging moisture is to the model of moisture content of outlet, and hot blast temperature is to the model of moisture content of outlet, and hot air flow is to the model of moisture content of outlet, and the barrel temperature is to model of moisture content of outlet etc.These models adopt modern progressive discrimination method (ASYM) to carry out identification and obtain.The ASYM method is divided into 4 steps:
(1) design of test signal.Adopt the pseudo-random binary signal to be superimposed upon on the input signal, the characteristic decision of process is arranged the amplitude of signal and average period, the testing time is approximately 10-15 times of process stable state time.
(2) structure of models is confirmed and parameter Estimation.Adopt the ARX model, and carry out parameter Estimation according to criterion of least squares.
(3) depression of order of high-order model and order chooses.Adopt the frequency weighting model order reducing method, and use progressive criterion to confirm the order of model.
(4) validity check of model.According to the boundary error of model, confirm the quality of modeling quality.If model quality is poor, get back to the first step, again the design test signal.It specifically constitutes:
1, head control system
The head stage can not be carried out FEEDBACK CONTROL because controlled moisture content can't be measured, and relies on the dynamic mathematical models of being set up fully, and therefore, the precision of model directly has influence on head control quality.This Mathematical Modeling is the single output of many inputs (MISO) model.Just because of adopted model, just can come the heating rate of comprehensive adjustment barrel according to expectation moisture content of outlet response curve, the temperature of hot blast, the flow of hot blast, a dynamic process that Here it is, purpose are to make adjustment reach a global optimum.
According to this algorithm, than very fast, the speed that heats up then tends towards stability, and has so both guaranteed that head pipe tobacco moisture content is unlikely to too high, has guaranteed that again pipe tobacco moisture content subsequently was unlikely to low at the starting stage programming rate.
For guaranteeing that in the different places of production of production, in the time of the pipe tobacco of different brands, head moisture in cut tobacco control accuracy has designed the self-learning function of advanced control algorithm than higher.It is according to the input and output metrical information of real process; Adopt certain object function reconstruction baking silk tube intensification Mathematical Modeling; After through 1-2 batch self study, make baking silk head moisture Control reach high control precision, and the characterisitic parameter of relevant model is preserved.
2, middle part control system
In the stage at the middle part, moisture content of outlet can be measured, and the present invention is incorporated into the control system with moisture, carries out feedback compensation.Owing to exist non-linear in the real system; The influence of factors such as uncertainty is in predictive control algorithm, based on the prediction output of varying model can not be not in full accord with the actual output of system; For this reason; Model Predictive Control adopts the error between actual output of process and the model output to feed back to be called and remedies this defective, in global optimization, can overcome the uncertainty in the system effectively like this, improves the control accuracy and the robustness of system.
Middle part of the present invention control scheme and traditional control scheme are essentially different: the general fixedly humidity discharging valve position that adopts of traditional scheme, control moisture through adjustment barrel temperature; Or under the situation that the barrel temperature is fixed, control moisture through the adjustment humidity discharging.These two kinds of schemes will not adjust humidity discharging and the barrel temperature combines, and can not guarantee really that humidity is relatively stable in the baking silk tube.
Scheme of the present invention takes humidity discharging to be controlled to be the master, and the barrel temperature is controlled to be auxilliary, and with both coordinating and unifyings.Control moisture content of outlet in short-term with humidity discharging; Because humidity discharging control moisture has response speed fast; Can improve the precision of moisture Control so greatly, and when the valve position of humidity discharging is too small or excessive, will be with suitable speed adjustment barrel temperature; Like this because the change of barrel temperature, with making the exhausting moisture valve bit recovery to desired setting value.This control model can improve the control accuracy of moisture, again can be under the situation that feed state (like inlet moisture, inlet flow rate) changes, and humidity is constant relatively in the maintenance baking silk tube, and then the processing quality quality of assurance baking silk.Concrete scheme is seen accompanying drawing:
3, afterbody stage control system
Know from Analysis on Mechanism and practical operation: the factor that influences afterbody pipe tobacco moisture content has the temperature of baking silk tube, EAT, intake velocity, the rotating speed of baking silk tube.These factors have effectively big to the influence of dried pipe tobacco, faster or slower, have have earlier after.In order to confirm their influences to process qualitatively, test as follows: (1) is closed the steam of hot blast in advance, and closes the steam of baking silk tube in advance; (2) close air intake and close humidity discharging simultaneously; (3) accelerate to dry by the fire a rotating speed of tube; (4) speed of raising air intake.
The result shows: close the steam of hot blast in advance, and the steam of baking silk tube has certain effect to reducing " dried tail " pipe tobacco in advance, but effect is not remarkable.If too early, then some pipe tobacco water content is too high in advance.
Under the constant situation of EAT, close air intake, though be unfavorable for the pipe tobacco dehydration, reduced the flowing velocity of pipe tobacco in baking silk tube, the time of staying of pipe tobacco in baking silk tube is elongated, and dried pipe tobacco increases.
Accelerate the rotating speed of baking silk tube and can accelerate the flowing velocity of pipe tobacco in baking silk tube, reduce drying time.To dry by the fire silk tube from time that 12 commentariess on classics/min are transformed into 18 commentariess on classics/min in advance, but the minimizing of the dried pipe tobacco of afterbody is influenced not quite.Therefore, can think: the flowing velocity of pipe tobacco in baking silk tube depends mainly on the speed of wind, rather than the rotating speed of baking silk tube.
According to above experiment, set up the model of afterbody process, and then carry out Model Predictive Control; Reduce the barrel temperature fast, accelerate the flow velocity of afterbody pipe tobacco, shorten the time of staying of pipe tobacco in baking silk tube, just reduce the pipe tobacco dewatering time, prevent the pipe tobacco overdrying, reduce the quantity of dried pipe tobacco greatly.
The enforcement of this coordination control comprises: carry out identification through progressive discrimination method (ASYM) and set up head; The control model of middle part and afterbody; Head relies on model to control, and the middle part is through being main with humidity discharging, and the barrel temperature is controlled to be auxilliary control mode control; Afterbody reduces the barrel temperature fast, accelerates the mode of afterbody pipe tobacco flow velocity and controls.
This control strategy is the tame cigar mill of successful Application to two, up to the present, a tame even running 60 months, other one tame comprehensive debugging operational excellence be about to be checked and accepted and to be put into operation.Practical application effect is following:
1, control procedure is automatic fully, really accomplishes operating in a key, avoids manual intervention in process of production, reduces the randomness of manipulation strength and operation;
2, it is strong to overcome interference performance, and control accuracy is high, moisture content of outlet be controlled at fully setting value ± 0.2%, standard deviation is below 0.006, the mean value of moisture content of outlet and setting value are below 0.01;
3, through precise math model, optimize the control model of head and afterbody, reduce the dried pipe tobacco amount of head and afterbody to greatest extent, dried pipe tobacco amount reduces 75% on the original basis, perhaps is less than 15 kilograms/batch.

Claims (2)

1. the advanced coordinated control system of a cut-tobacco drier moisture is characterized in that: comprise head control system, middle part control system and afterbody stage control system, wherein,
Head control system adopts the single output model of many inputs, just can come the heating rate of comprehensive adjustment barrel according to expectation moisture content of outlet response curve, the temperature of hot blast; The flow of hot blast; According to this model, than very fast, the speed that heats up then tends towards stability at the starting stage programming rate;
Middle part control system adopts moisture is incorporated into the control system; Carry out feedback compensation; Model Predictive Control adopts the error between actual output of process and the model output to feed back and remedies this defective; In global optimization, can overcome the uncertainty in the system effectively like this, improve the control accuracy and the robustness of system;
Middle part control system takes humidity discharging to be controlled to be the master, and the barrel temperature is controlled to be auxilliary, and with both coordinating and unifyings; Control moisture content of outlet in short-term with humidity discharging,, can improve the precision of moisture Control so greatly because humidity discharging control moisture has response speed fast; And when the valve position of humidity discharging is too small or excessive; Will be with suitable speed adjustment barrel temperature, like this because the change of barrel temperature, with making the exhausting moisture valve bit recovery arrive desired setting value;
The afterbody stage control system is set up the model of afterbody process, and then carries out Model Predictive Control; Reduce the barrel temperature fast, accelerate the flow velocity of afterbody pipe tobacco, shorten the time of staying of pipe tobacco in baking silk tube, just reduce the pipe tobacco dewatering time, prevent the pipe tobacco overdrying, reduce the quantity of dried pipe tobacco greatly.
2. the advanced coordinated control system of a kind of cut-tobacco drier moisture as claimed in claim 1; It is characterized in that: said head is controlled the head moisture in cut tobacco control accuracy of system than higher; Designed the self-learning function of advanced control algorithm; It adopts certain object function reconstruction baking silk tube intensification Mathematical Modeling, after through 1-2 batch self study according to the input and output metrical information of real process; Make baking silk head moisture Control reach high control precision, and the characterisitic parameter of relevant model is preserved.
CN2011104147961A 2011-12-14 2011-12-14 Advanced coordinated control system for moisture in cut tobacco dryer Pending CN102488308A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103315382A (en) * 2013-06-19 2013-09-25 浙江中烟工业有限责任公司 Cascaded PID based charging moisture control device in tobacco shred processing technology
CN103610227A (en) * 2013-12-09 2014-03-05 中南大学 Cut tobacco dryer head and tail section process variable optimizing control method
CN104172457A (en) * 2014-09-10 2014-12-03 四川烟草工业有限责任公司 Tobacco shred dryer control system and method
CN104273646A (en) * 2014-09-28 2015-01-14 上海烟草集团有限责任公司 Uniform-feeding, atomizing, humidifying and water control system
CN104680879A (en) * 2015-01-13 2015-06-03 中国烟草总公司职工进修学院 Method and system for simulating tobacco drying machine
CN105029672A (en) * 2015-06-24 2015-11-11 广西中烟工业有限责任公司 Precise characterization method for water at outlet of baked cut tobacco
CN105595391A (en) * 2016-01-12 2016-05-25 东华大学 Advanced control method for comas tower dryer (CTD)
CN106072744A (en) * 2016-08-09 2016-11-09 上海烟草集团有限责任公司 A kind of drum-type cut-tobacco drier over-dried cut tobacco processing method
CN107421839A (en) * 2017-06-08 2017-12-01 上海烟草集团有限责任公司 For drying the initial moisture content detection means and method of silk thread production
CN108208902A (en) * 2018-04-08 2018-06-29 江苏中烟工业有限责任公司 A kind of air current type tobacco shred drying machine process gas temprature control method
CN110876480A (en) * 2019-09-06 2020-03-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN111427322A (en) * 2020-04-20 2020-07-17 浙江中烟工业有限责任公司 Intelligent cooling moisture control system for silk making and drying cylinder based on machine learning algorithm
CN111895758A (en) * 2020-08-12 2020-11-06 贵州中烟工业有限责任公司 Control method of drying device for tobacco shredding
CN113017132A (en) * 2021-04-09 2021-06-25 红云红河烟草(集团)有限责任公司 Cut tobacco quality optimization method based on cut tobacco dryer process parameter prediction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069830A (en) * 1974-07-25 1978-01-24 Hauni-Werke Korber & Co. Kg Apparatus for conditioning tobacco
US4788989A (en) * 1984-06-21 1988-12-06 Japan Tobacco, Inc. Process for the temperature control of a drying apparatus for tobacco leaves
CN101254020A (en) * 2007-12-28 2008-09-03 上海烟草(集团)公司 Thread baking thread process control method
CN101356992A (en) * 2007-07-31 2009-02-04 武汉烟草(集团)有限公司 Downstream type tobacco-dryer exit tobacco-shred water control method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069830A (en) * 1974-07-25 1978-01-24 Hauni-Werke Korber & Co. Kg Apparatus for conditioning tobacco
US4788989A (en) * 1984-06-21 1988-12-06 Japan Tobacco, Inc. Process for the temperature control of a drying apparatus for tobacco leaves
CN101356992A (en) * 2007-07-31 2009-02-04 武汉烟草(集团)有限公司 Downstream type tobacco-dryer exit tobacco-shred water control method
CN101254020A (en) * 2007-12-28 2008-09-03 上海烟草(集团)公司 Thread baking thread process control method

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
任正云等: "烘丝过程烟丝含水率的MFA控制", 《烟草科技》, no. 6, 30 June 2005 (2005-06-30) *
杨明权: "改进HAUNI烘丝机控制模式降低烘丝干头干尾量", 《烟草科技》, no. 8, 31 August 2005 (2005-08-31) *

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Publication number Priority date Publication date Assignee Title
CN103315382A (en) * 2013-06-19 2013-09-25 浙江中烟工业有限责任公司 Cascaded PID based charging moisture control device in tobacco shred processing technology
CN103315382B (en) * 2013-06-19 2015-04-15 浙江中烟工业有限责任公司 Cascaded PID based charging moisture control device in tobacco shred processing technology
CN103610227A (en) * 2013-12-09 2014-03-05 中南大学 Cut tobacco dryer head and tail section process variable optimizing control method
CN103610227B (en) * 2013-12-09 2015-04-15 中南大学 Cut tobacco dryer head and tail section process variable optimizing control method
CN104172457A (en) * 2014-09-10 2014-12-03 四川烟草工业有限责任公司 Tobacco shred dryer control system and method
CN104273646A (en) * 2014-09-28 2015-01-14 上海烟草集团有限责任公司 Uniform-feeding, atomizing, humidifying and water control system
CN104273646B (en) * 2014-09-28 2016-04-27 上海烟草集团有限责任公司 Even feeding spraying humidification moisture control subsystem
CN104680879A (en) * 2015-01-13 2015-06-03 中国烟草总公司职工进修学院 Method and system for simulating tobacco drying machine
CN105029672A (en) * 2015-06-24 2015-11-11 广西中烟工业有限责任公司 Precise characterization method for water at outlet of baked cut tobacco
CN105595391A (en) * 2016-01-12 2016-05-25 东华大学 Advanced control method for comas tower dryer (CTD)
CN106072744A (en) * 2016-08-09 2016-11-09 上海烟草集团有限责任公司 A kind of drum-type cut-tobacco drier over-dried cut tobacco processing method
CN107421839A (en) * 2017-06-08 2017-12-01 上海烟草集团有限责任公司 For drying the initial moisture content detection means and method of silk thread production
CN107421839B (en) * 2017-06-08 2020-01-31 上海烟草集团有限责任公司 Pre-baking moisture detection device and method for production of baked silk threads
CN108208902A (en) * 2018-04-08 2018-06-29 江苏中烟工业有限责任公司 A kind of air current type tobacco shred drying machine process gas temprature control method
CN108208902B (en) * 2018-04-08 2020-08-11 江苏中烟工业有限责任公司 Process gas temperature control method for airflow type cut tobacco dryer
CN110876480A (en) * 2019-09-06 2020-03-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN110876480B (en) * 2019-09-06 2021-08-13 长沙学院 Modeling method for dry tail process of cut tobacco drying process of drum-type cut tobacco dryer
CN111427322A (en) * 2020-04-20 2020-07-17 浙江中烟工业有限责任公司 Intelligent cooling moisture control system for silk making and drying cylinder based on machine learning algorithm
CN111895758A (en) * 2020-08-12 2020-11-06 贵州中烟工业有限责任公司 Control method of drying device for tobacco shredding
CN111895758B (en) * 2020-08-12 2021-11-09 贵州中烟工业有限责任公司 Control method of drying device for tobacco shredding
CN113017132A (en) * 2021-04-09 2021-06-25 红云红河烟草(集团)有限责任公司 Cut tobacco quality optimization method based on cut tobacco dryer process parameter prediction

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Application publication date: 20120613